Lubricating installation



Feb. 7, 1939. J'. BIJUR LUBRICATING INSTALLATION Filed July 18, 1930 5Sheets-Sheet l INVENTOR .fome

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,Kdo ATTORNEYJ Feb. 7, 1939. 1 BUUR 2,145,854

vI QUBRICATING INS TALLAT TON Filed July 18, 1930 3 Sheets-Sheet 2 I Il)gt-@fihi I INVENTOR J. BIJUR LUBRICATING TNsTALLATIoN Feb. 7, 1939.

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Patented rta-1,1939l s V'PATENT oi-FICE LUBRICATING INSTALLATION JosephBijur, New York, N. Y., assigner to Auto Research Corporation, acorporation of Dela- Ware Application July 18, 1930', Serial No. 468,790

` 24 claims. (ci. isi-29) -The present .invention relates primarily to lvcentral chassis lubrication of automobiles and,

verally claimed and disclosed in the prior'Patents While not limitedthereto, lis concerned more especially-with systems of the drip plugtype, gen- Nos. 1,632,771, 1,732,212 and 1,746,139.

It is an object of the invention-to eifectlub'ricantv propulsion to thechassis bearings, by power already available on the vehicle for otherpurposes, and to meten the lubricant for substan-A tially correct'lfeedunder favorable, as well as under adverse conditions of operation, allwith the use of simple rugged mechanism.

Another object is to effect the propulsion of lubricant to` thebearings' without thev need for manual actuation or control, and inaccordance with the requirements of each-bearingthroughout the operationof the vehicle,.al1 without reic conditions.

y sort to reduction'gearing or other mechanical operating or wearingconnection withl the running mechanism'of the vehicle.

Another object is to provide an installation of the above type,utilizing'any irregularly varying force generated in operationof thevehicle, pref erably suction at the intake manifold, as the primary.lubricant propulsive agency, without complication byauxiliaryaccumnlators or trip mechanism, and in whichnevertheless-lubrication is assured on the one hand under steadyorfavorable traic conditions and excessive'feed of lubricant is guardedagainst on the otherhand under unfavorable or spasmodically "varyingtraf- Another object is to provide a lubricant supply installationuniversally applicablein'a single size Without the need for anyadjustment to suit the Widely varying characteristics of Various moderncant pump of small volume, preferably a reciproeating pump submerged ina supply of lubricant and actuated by a pulsating motor operated from asource of varying energy, 4preferably suction at the intake manifold. 5A In a preferred embodiment the motor consists of an encased diaphragmsubjected to suction applied thereto directly' from the manifold.against the resilient opposition, preferably of a spring. The springpreferably is coiled about 10 the rodthrough which the diaphragm isconnected -to vthe pump plunger, and balances the diaphragm in any ofVarious settings thereof corresponding 'to sustained suction thereon, ofleach of various magnitudes incurred during vel5 hicle operation.Preferably the diaphragm'has sufficient slack or looseness between itsfixed rim and its central stiffened movable portion, as to admit of veryready displacement of the latter, the setting of which is accordinglygoverned 20 almost entirely by the characteristics of the coil springwhich-opposes the applied suction. For any substantial increase insuction during operation, as by throttle-closing the diaphragm is liftedfarther and for 'material decrease in suc- 25 tion as by opening thethrottle the stressed spring relaxes to effect discharge of the pump.

' Another feature of the invention is the use of a throttle, preferablya fixed throttle to retardl or reduce the effect of frequent violentpulsations 30 of suction incurred under conditions of ldriving in densetraffic, the throttle preferably comprising a highly restricted passageor fitting'in the 'course of flow between the intake manifold and thediaphragm.

Another feature resides in the lubricant sup.- ply which may include areservoir of glass or l 1 alltmObleS, and the'Wdely Varying condtih,other transparent material and is preferably proof operating the same.

VAnother object is to lprovide an installation of the above type cfrelatively inexpensive construction, With liberal manufacturingtolerance yet with friction losses so low as to insure sensitiveresponse'- to variations in operative force.

ply installation that affords the advantages of a glass 'container forease in ascertaining when to refill, which admits'of assembly xm'thoutplacing any substantial fracturing stresses upon the glass and therebyavoids the danger of breakage and of f injury' to the operator, incurredin cases where the glass container must be screwed into place.

Other objects are in part obvious and in part` Another object is toprovide a lubricant lsup-- Figs. 2 and 3 shw side and top views,respec-Y 4' f tively, of the same embodim'ent; y ,-vf 50 Fig. 4 is afragmentary view in longitudinal. section and on a larger scale'she/:wing -details of 11h@ Pumping mechanism; M..

Fig. 5 is a View inwlongitudinal section of one form of adamping'device: 5t

Fig. 6 is a diagrammatic plan of a typical chassis lubricating layout;and I Figs. 7 and 8 show Itypical flow metering devices or drip plugs.

Figs. 1, 2 and 3 show the reservoir, pump and motor combination, thepump P being enc-losed within the reservoir R adjacent the bottomthereof and the motor M being positioned above the reservoir and abovethe pump, the cap or coverI C of the reservoir supporting both the pumpand the motor. l

, 'I'he cover C is provided with an inlet opening 23| provided with aremovable cap 232.

The reservoir -R which is preferably of glass has a rim expanded toalord a shoulder 23 for resting upon the carrying strap 24. Strap 24 hasan associated bracket 25, thezinturned ends 26 of which overlap theoutturned ends 21 of the strap, and bolts 28 through the overlapped endsof the strap and bracket serve to aixthe latter to the dashboard D orother mount.

To the outside of strap 24 are attached, as by Welding or soldering,attened portions 29 of upstanding bolts 30. upwardly through spacedopenings .near the vertices of squared cover C. Nuts 3| screwed upon theends of bolts-30 press the cover C firmly, against the top of the glasstank and the interposed gasket 32 assures a substantially lubricanttightt.

A depending support strap 38 is secured at its base element 12 and theycover element 13 of the motor capsule, the rim "of the base elementbeing crimped over that of the cover at 14.

A rod 15 is rigidly aiiixed centrally of the diaphragm by meansincluding a disk 18 and a cup 19 disposed at opposite faces of thediaphragm and pressed Vthrough an interposed washer 16 against shoulder11 on the rod 15 .by means of a nut 80 threaded upon the reduced upperend 8| of said rod. Rod 15 extends with substantial clearance throughthe ilanged opening 82 in the motor base 12 and is connected to the pumpplunger 4| by a universal joint comprising a reduced end 84 of thelplunger.

hemispherical fltting 83 rigidly affixed over the A coil spring 85 in acorresponding deep socket 86 at the lower end oi the rod 85 presses thespherical :surface of the ball member against a collar 81 retained inlplace by the inturned lower edge 88 of the hollowed rod and preventslost motion or rattling between rod 15 and plunger 4|. lReason- ,jrod 15and slight rocking of the universal jointable tolerance in misalignmentbetween the diaphragm center and the `pump are thus permitted, slightexure of the diaphragm, slight tilting of @T83 taking up suchmisalignmenm without, howeverfimpos'ing undue friction on the parts.v

ASuction is appliedfin .operation as more fully describedbelow, throughtting |00 'in the cap thelmaximum lift being determined bycontagt,of\"thelfrod end8| with the capsule cover I -13", inwhiclposition the central part of the diafphragm is prefeabixjiiftedapproximately to the The bolts 30 project plane of the rim 1|. Themaximum diaphragm depression is determined by engagement of wash- '.er1s with base 12.

near the rirnthereof. 'Ihe central portion of the diaphragm stiffene'dby disk 18 and cup 19 can thus be displaced through the permitted rangewithout material strain uponthe diaphragm *na- ,i

terial, the loose' fold |0| admitting of such relatively free orfrictionless movement.

A coil spring |02 encircling the rod, reacts its upper end against thexed motor support 31 and at its lower end against a centering cup |03upon a nut |03 threaded upon the rod. The spring is precompressed forsuch characteristic as aproximately to retain the diaphragm in balancebetween the upper and lower limits of diaphragm' movement and at levelsroughly proportional to suction. In other words, the greater thesuction, the greater the compression of the spring and the higher theposition of the diaphragm. The nut |03 is initially adjusted in settingup the apparatus for use, to impart correct balance strength to spring|02, andk is thereupon locked in position by mutilating the thread at Y'|04 by a blow upon a pointed tool inserted.

through hole |05 in the nut.

Attachedto the lower end of the strap 38 to depend therefrom is thecylinder block P. The.

upper portion of the cylinderblock is provided with a socket into whichis press fitted a long fits the inside of the bearing guide 39, therebylpreventing leakage of lubricant therefrom. Below the bearing 39 is thecylinder.42, the wall of which aiordsa slight gap with respect to theplunger 4|. lThe lower portion of the cylinder block has a tapped socket43, which receives a removable threaded annular plug 44 provided with aseat for the inlet ball check 46 and enclosing ,the combined ball checkstop 41 and valve spring 48. Stop 41 has a flange staked into plug 44and a shank perforated at 49 to permit the kready passage of lubricantto the pump, should the ball check 46 be lifted to engage the end ofmember 41.

To the lower outer edge of the block P is crimped the upper rim of thedownwardly facing cup 50, the lower portion of which contains the feltfilter disk 5| which is held in position by means of the clamping ring52, which is in turn held in position by the spring ring 53, in groove54 of cup 50 and backed by metal vscreens 55.

For elective venting, the reservoir R is provided with a hole h in motorbase 12 which communicates with the reservoir contents vthrough system.The coupling union 58 mounts a ball check valve 6| urged against aseating plm 52 within the coupling'union 58, by means of a -coil spring63. v

The unit, as shown in Figs. 1 to 4, is particularly suitable as thepropulslve mechanism for feeding lubricant to the bearings of anautomobile chassis.' In Fig. 6 is shown a diagrammatic'arrangement ofsuch installation. The reservoir R.

shown aiiixed to the dashboard is connected with theintake manifold m bymeans of a pipe' |8| applied to fitting 300. The pump outlet fitting. 58feeds through pipe |82 to junction 285 in cross conduit |83, theopposite ends of which lead, respectively, to junction fittings |88 and|80 on the respective channel frames along which pipes extend to feedthe various bearings, including the spring-bolts and shackles. Junction|80 is illustratively shown with an additional outlet leading throughpipe |83 tothe clutch release collar |94. The junction |88 is shown withan additional outlet feeding a conduit |80 which includes a flexiblesection |8| and leadsto a conduit |82 along the front axle. from theends of whichlatter conduit steering knuckles |85 are supplied.

'.In advance of each of the bearing inlets is provided a flowrestriction of any of a varietyof pipe couplings ||2 the extremities ofthe sections that make up the piping mains on the channel frames orother structure.

The drip plug structure of Fig. 7 .as Well as the stem of Fig.A 8 maycomprise a' fitting ||0 having a'socket |3.at its` outer end conformedas a valve seat ||4 with a coacting flap valve I I5 retained in place bymeans ofa perforated and embossed cap H6. Into the inlet socket Ill ofthe fitting is plugged a` felt strainer ||8 having abacking cup ||9 ofwire mesh. In the longitudinal bore between the Valve and the straineris disposed a restriction pin |20 maintained by staking at |2| fromengagement with the valve.

K Pins of different diameters are used in accordance with the desiredratings of the fittings, the'longitudinal bores of the fittings beingidentical.

The drip plug is threaded at |22 for application intothe bearing andhasa threaded inlet end |23 for application thereto of a coupling foreffecting pipe connection. TheI pipe coupling may comprise a thimble |24telescoped into the socket ||8`and serving as a stop for the pipe endy|25, and a compression coupling Asleeve |26 encircling the pipe end andbeing forced against the thimble byth'e coupling cap |21 threaded uponthe iitting.

The system being installed on the vehicle, a shown in Fig. 6, and theoil reservoir being charged, the parts remain in the relationv shown4inFig. l as long as the engine is at'rest, the

spring |02 maintaining the diaphragm depressed` to lowermost position.

During-running of the vehicle, suction is applied from the intakemanifold to themotor. cap

i'low controlling stem ing the spring I 02. Depending on the degree ofsuction, which for some vehicles, under some running conditions may beas high as 18 inches of mercury and for other vehicles under otherrunning conditions may be as low as 6 inches of v5 'mercury, the'spring|02 will be correspondingly compressed to equalize the suction anddispose the diaphragm center at corresponding level. Thus under allusual operating conditions the diaphragm floats at a level varyingsubstantially 10 directly with the suction exerted by the'intakemanifold.

The diaphragm being in any of various floating positions set forth,when, as by opening the throttle, the pressure becomes more nearlyatmos- 15 pheric, the spring |02 is permitted to expand and thereby todepress the diaphragm 10, consequentlyurging downward the pump rod 15and with it the plunger 4| and to urge the small contents of thecylinder into the distributing pipe 20 system.

Thus, regardless of the condition of operation, each material decreasein the manifold suction from any sustained magnitude thereof, due to anyof various frequently occurring conditions 2 or vehicle drivingmanipulations, will bring about discharge of the pump into thedistributing line.

The pump is discharged solely as a result of variations of manifoldsuction, regardless of the mean sustained value of such suction. Thepump is 30 charged and maintained charged under sustainedy suction onthe diaphragm during the intervals v between discharges.

'I'he pumping unit is quite'sensitive to small suction variations, forthe diaphragm moves with 35 escape through -the drip plugs of thedistributing system and be replaced by oil that completely fills andmaintains filled the voids in the pump.

The pump plunger fitting with small clearance initially charging thereservoir, which air will 45 in an elongated pump cylinder, leakage lisnot 50 troublesome and substantially the effective amount of oil in thepump is ejected past the outlet valvel6| into the distributing system.Return of oil through the pump past the inlet valve 46 is prevented, asthe, spring 48 effectively seats 55 the ball and prevents the returnflow of oil in plunger depression, which might otherwise occur,especially when the oil is fairly viscous as in cold weather.

As the small clearance between the end of 00 plunger 4| and the intakevalve 46 is completely `filled with oil, as above noted,` sufficientsuction is exerted even in pump' strokes as short as -Jg inch to effectlifting of the valve 46-and drawing in of a charge past filter 5|.operation of the pump during normal vehicle operation, especially inview of the limited resilience -of the pipe system results in a more orless sustained pressure therein, to effect moreor less continuousdelivery by the drip plugs 7 throughout vehicle operation under linepressure adapted to the viscosity of' the oil.

The relative frequence of 05 when the 011 is Vquite nuid, as in notweather,

the line pressure may be as low as 1 pound, or

will readily respond, while in winter weather, the pressure may rise to50 pounds per square inch,

or more. f

Delivery of lubricant through the respective drip plugs will occur atthe relative rates determined thereby, the total delivery beingdetermined by the pump. W'hen the vehicle stops, even though the enginebe idling, lubrication ceases, any incipient leak through a bearing atlow' level'being checked by the consequent suction of the light flapvalves of drip plugs at higher level against their seats. The pipesystem thus always remains oil filled.

The filter 5| assures the entry of clean oil t0 the pump line and tendsto shed by gravity foreign particles intercepted by its lower face.Should an improper'oil be used and the filter become clogged thereby,the' cover with the motor and operations.

pump carried thereby are readily removed and the lter withdrawn andcleaned or replaced. The: filter thusA protects the various strainersand other sensitive parts of the drip plugs shown in Figs. 7 and 8 fromderangement due to the use of such improper oil.

While the various elements of the lubricant supply unit may be made inproportions or d imensions suited to the particular use to which thedevice is put, the application of the device for automobile chassislubrication renders certain dimensions and proportions peculiarlysuitable for universal application to various widely differing makes ofautomobiles. For such purpose the pump plunger preferably has a. crosssectional area of 1/50 square inch, the diaphragm has a diameter of 2%@inches and a stroke of V4 inch. The glasstank may have an4 overalldiameter of about 4% inches and an overall depth of about '7l/2 inchesfor the quart size and about 4% inches for the pint size. The walls whenof flint glass are suiciently strong if 11/64 inch in thickness. Thebottom is preferably convex upward, as shown at |50 for convenience inhandling prior to installation. In such arrangement spring 85 ispreferbeing near the bottom of the reservoir, the latter can be almostcompletely exhausted before refilling becomes imperative.

above the band 2i, th'e upper end of the reservoir is exposed to view,and the likelihood of filling to overflow is avoided.

In use of the system, as thus farv described, it is apparent that, werethe parts so arrangedor set as to feed approximately correctly undercondition of sustained highway travel, there would be a great excess oflubricant 4feed under conditions of city driving, where the manifoldsuction would be varied suddenly and frequently through wide ranges,during the recurrent gear shift and brake To prevent the consequentoverlubrieation under such conditions of operation, means ispr ferablyprovided automatically to re-A duce the effect vepess upon the motor Mof such The reservoir is readily refilled after removal of the fillingcap and since the cover is spaced a substantial distance sudden changesin suction. For this purpose choke or damper means is preferablyinterposed in the path of suction application from the manifold m to themotor M. A preferred construction of such choke is shown in Fig. 5 andembodies a Afitting |3| generally similar to the drip plug fitting ofFig. 7, but in which protective felt plugs -a socket |36 in the block|00 shown crimped at |38 to the head '|3'of the motor M.

Thus, in operation when suction is suddenly applied at. the manifold,the air or gas can escape but slowly from the motor head through thechoke plug |3| so that before the pressure will have been greatlyreduced in the motor, the suction in the manifold .will again havebecome less intense. Thus the variations of suction on the motor aremaintained within relatively small ranges notwithstanding sudden andwide Variations of suction at the manifold.

The mounting bracket for the reservoir is particularly inexpensive, 'inthat it consists merely of a strap 24 made of stock metal strip amplyreinforced by the bracket strip of somewhat heavier and wider stockstrip which'affords a particular stiff, anti-tilting mounting. Theinturned ends of the bracket 25 overlap the outturned ends of thevstrap24, which lie against the length of the bracket. The two parts of themounting are readily assembled together without the need for welding orriveting.

What is claimed as new and desired to secure by Letters Patent, is r' 1.A centralV chassis lubricating system, th lubricant propulsive energy ofwhich is derived from the vacuum in the intake manifold, cornprising aconduit system for distributing lubricant to the various bearings, apumping 4device supplying lubricant for said conduit system, a pressureresponsive device for actuating said pumping device, a uid lineconnecting said pressure responsive device with the intake manifold,

and a continuously open valveless flow restricting l -pressureresponsive device to said liquid distributing system.

3. A central lubricating system deriving its lubricant propulsive energyfrom the variation of pressure in the engine intake... comprising alubri cant distributing conduit system, a plunger pump. a conduitconnecting said diaphragm with said engine intake. and a restrictionfitting in;

said conduit including an orifice and vlter means cooperating with saidorifice to prevent clogging thereof.

4. In combination with a pressure responsiveV device, a plunger pumpvand a connecting rod operatively connecting said plunger pump to saidamaai.v

forcing said enlargement against said seat and compressed -between saidenlargement and the -bottom of the socket. l

1&5.' In apparatus -of the character described, a rglassfreservoirhaving an expanded rim portion,

affording a mounting shoulder, a strap adapted to'fbev a'fxed to a mountto afford a res-t and support for said reservoir at said mountingshoulder, a cover for said reservoir, clamping means .ailixed to saidstrap and adapted to press said cover upon said reservoir, a pumpdepending `from said cover to near the bottom o f said reservoir, amotor afixed to the top of said cover for operating said pump, a fillingcap on said adjacent the top thereof, meansr for attaching said metalstrap to a `mounting, upwardly extending bolts rigidly attached tosaid'strap and passing through openings in said cover and means upon thetop ofv said bolts to hold said cover upon the top of said reservoire 7.A supply installation for a central chassis lubrication systemcomprising a vertical lo'ngitudinal reservoir, a cover therefor, alubricant inlet; a pump in said reservoir, a mounting bracket for :aliquid containing reservoir, said bracket rcomprising a reservoirencircling strap having and` said device, pipe means for connecting thedevice to a source of energy for eifecting a pressur'ezdiierence' onopposite sides of said device resulting in movement of the piston duringmost of Iitsoperation, means for equalizing pressure on opposite sidesof the deviceduring most of its voperation, and for returning the pistonto -initialpposition, fluid controlling means arranged at one side ofthe device for braking movement of thewpistom Aand a connection betweenthe connecting rodand pumppiston which automaticallyoperates above apredetermined pressure of lubricant in the supply pipe to prevent thede-- vice from operating the piston during the time cured tosaidcoverand depending into said respressurefzis above said predeterminedminimum. 9lfAfr; liquid supply 'installation comprising a reservoirhaving a cover, a carrying structure seervoir,-.a .pump arrangementvcarried -by said structure, any actuating arrangement secured tosaidcover above said pump and connecting means aflixed to the operativeelement of said actuating y arrangement at one end and to the voperativemembery of said pump at the other.

,10,@Alubricant supply installation comprising areservoir, a coverailxed thereto, a carrying means depending downward into said reservoirfrornsaid cover, actuating means mounted on said cover,- connectionmeans aiilxing said actuating Vmeans-and said carrying means rigidly tosaid motor with said pump s iti cover, afpiston pump amxed near thelower endv of said carrying means with its lowerextremity near thebottom of said reservoir, a connecting arrangement aiixed to theactuating means and at the other to the piston of said pump, and anoutlet conduit from said pump. extending upward within said rservoirthrough said cover.

11. A pump and reservoir unit for centralized lubricating systemsincluding a cylindrical lubricant reservoir, a cap member for saidreservoir, a plunger pump secured to said cap member and locatedadjacent the bottom of said reservoir, and vacuum operated means mountedon said cap for actuating said pump. i

12. In a centralized lubricating system, a pump and reservoir unitcomprising a lubricant reservoir, a pressure chamber associatedwith'said reservoir, a movable wall in said chamber, a spring forurgingsaid wall in one direction', a stem secured tosaid wall and projectinginto said reservoir, a high pressure cylinder secured within saidreservoir, and a'plunger carried by said stem and reciprocable in saidcylinder.

13. -A pumping arrangement for 'a lubricant distributing systemcomprising a motor, a pump for forcing lubricant under pressure intoIsaid system, and a connection including a resilient connection betweensaid motor and said pump transmitting power from said motor to saidpump, said resilient connection being effective to cause said motor andpump to move rigidly together at predetermined low pressures and beingeffective to permit movement of said motor without movement of said pumpat higher pressures.

14. In a lubricating apparatus of the class described, the combinationof a transparent'reservoir,` a supporting bracket for the reservoir, acover for the reservoir, a depending supporting member for the pump, acylinder supported by said member, said cylinder provided with an inletand an outlet, a strainer interposed between said inlet and saidreservoir, an outlet connection carried by said cover, conduit meansconnecting said outlet connection with said cylinder outlet, a smallmetallic piston reciprocable in said cylinder and forming a metal tometal seal therewith, a piston rod connected with said piston by aconnection permitting relative angular movement, said piston rodextending through said cover, a

rspring for operating said piston in one direction,

and automatic means" for operating said piston in the oppositedirection.

15. In a combined pump and reservoir unit for Y ing means, associatedtherewith for securing said receptacle to a support, a small diameterlubricant pump secured to said cap member and disposed adjacent thebottom of said reservoir, a

conduit including a passageway through said cap member for connectingthe discharge outlet of said lubricant pump to a lubricant distributingl cap to a supporta member dependinglyaiiixedv to said cap carryingy apump cylinderatits" lower .von

member constituting the sole support vfor vsaid l cylinder, a motoraihxed to the upper side of said cap, a small diameter plungerreciprocable in said l cylinder, an operating member universally con`necting said motor to said plunger for discharging lubricant `from saidpump cylinder, and a conduit `for conveying the lubricant dischargedfrom said pump cylinder to a lubricant distributing system.

1'7. A pump installation for centralized lubricating systems comprisinga cup-shaped glass bowl forming a Ilubricant reservoir, a cap securedthereto, means for securing said reservoir rand cap to a support,motivating means carried by said cap and extending above said reservoir,a pump including a cylinder having an inlet and an outlet port, saidpump cylinder being rigidly supported by said cap and located adjacentthe bottom of said reservoir, a plunger reciprocable in said pumpcylinder, an operating member universally connecting saidv motivatingmeans and said plunger, a illter carried by said pump cylinder anddisposed between theinlet port and the nected to the discharge port ofsaid cylinder and passing through said cap for conveying lubricant fromsaid pump to alubricant distributing system.

18. In a combined pump and reservoir unit for ya centralized lubricatingsystem, of the class described, the combination of a glass reservoir, atop therefor, means for attaching said top to said reservoir, aAlaterally extending bracket for attaching said reservoir and top to asupport, operating means'carried by said top, Said Voperating meansincluding a small pump located vadjacent the bottom of said reservoir, amotor extending above said topv and means connecting said pump centrallylocated opening through which part of said operating means extends, saidmotor ineluding a spring and means for adjusting the tension thereof, astrainer associated with said pump, and a discharge conduit for saidpump leading upwardly therefrom to a. point above said glass reservoir.y l A 19. In a combined pump and lreservoir unit for a centralizedlubricating system, the combination 1 of an open-ended receptacleforming a lubricant reservoir, a. member overlying the open end of saidreceptacle, means for attaching said member to said receptacle, a-bracket for; carrying said memberv and said receptacle,-a pump unitdepending from said member and located adjacent the bottom of saidreservoir,l said pump unit including a cylinder, a smally rod-likeplunger re;

above, and a connection between said motor.

20. In a combined pump and reservoir unit for a centralized lubricatingsystem, the combina- 'tion 4of an open-ended transparent receptacle`forming a `lubricant reservoir, a member. oversaid pump and lying theopen end of said receptacle, means for detachably attaching said memberto said receptacle, a bracket for carrying said member and 75 der, a.small diametemunger reciprocabie therelubricant in lsaid reservoir, anda conduit conwith said motor, said top having a substantially saidoutlet port with'said passageway, almotor supported by said member andextending there-` in, and inlet and outlet ports, a 'strainer supportedadjacent said inlet port, a check valve for saidl outlet port, saidmember having a passageway therethrough terminating in a tting adaptedfor filling opening therethrough, and a cover normally closing saidopening.

V21. In an automobile chassis-drip plug lubricating installation, a pumpand reservoir unit having a reservoir enclosure provided with a coveringupper wall having an inlet opening for lubricant, a reciprocatingautomatically. actuated motor-including a motor element oating duringoperation and a coil spring opposing movement of said floating elementin one direction, a thin cylindrical elongated metallic plunger, acasing for said motor element located abovel the lubricant level in saidreservoir enclosure and above said upper wall, and a pump block with avertical cylindrical bore receiving said plunger located closelyadjacent the bottom of said enclosure, said motor element and saidplunger being| directly operatively connected together so that saidmotor element will move said plungerA both upwardly and downwardly torespectively takei charging and discharging strokes, said connectionbeing by a connecting, rod extending down through said covering upperwall having a universal connection with respect tosaid plunger, saidcylindrical bore being provided with a lower portion into whichlubricant is sucked from said reservoir upon upward motion of theplunger andfrom which it is discharged upon downward motion' of theplunger in to the 4piping 'system and also with an upper portion servingasa guide for the plunger andvfurther being provided with inlet andoutlet ports, one of which extends transversely toward said lowerportion and the other of which extends longitudinally from said lowerportion, the outlet port being provided with a spring-seated outlet.check valve and Athe inlet port being provided with a filter element,said plunger being located in said bore with its lower end adjacent saidlower portion of said bore in a o -by said structure, a uid pressureoperated motor v secured'to said cover in alignment with said pump andaconnecting-rod affixed to the operative element of said motor at one endand to the operative member ofsaid pump atthe other.

23. A lubricant supply installation comprising a. reservoir, acoveraflixed thereto, a carrying strap depending 'downward' into saidreservoir from said cover, a motor in alignment therewith mounted on topof said cover, means amxing said motor and said carrying strap rigidlyto said cover, a pump block aiilxed near the lower end of said carryingstrap with its lower extremity near the botton of said reservoir, aconnecting rod aflixed atl one end to the` operating member amas . saidpump block extending upward within said reservoir through said cover.

24. In an automotive'vehicle of the type having an engine, an intakemanifold having a substantial vacuum continuously varying during op-f'eration of the vehicle and a chassis lubricating system; a continuouslubricant pump comprising a piston, a cylinder receiving said piston, amotor .actuating said piston, said motor including a diaphragm and upperand lower stops for limiting movement of the diaphragm, a conduit toestablish communication between one side of said dlaphragm and saidintake manifold at all times during operation of the vehicle, anotherconduit to establishcommunication between the other side oi.' saiddiaphragm and the atmosphere at all times, a spring to act upon saiddiaphragm to move it in a direction opposite to that in which it ismoved by said vacuum, said spring being of such a character as tobalance said diaphragm against said vacuum in a floating positionremoved irom the said upper and lower stops during most of the operationoi.' the vehicle, said diaphragm being so balanced that variations andiluctuations in said vacuum normally will cause ay fluttering' of thediaphragm above and below an average position and will cause a rapid andfrequent reciprocation of said piston with resultant nearly continuousfeeding or lubricant to said chassis lubricating system during operationof the vehicle.

JOSEPH BIJUR.

